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Fig. 2A. —40-year-old man with suspected abdominal wall hernia. CT scan obtained with IV and oral contrast material at rest shows deficiency of anterior abdominal wall (arrows) with protrusion of small bowel and omental fat. Horizontal line denotes transverse diameter of hernia aperture. Short vertical line denotes anteroposterior (AP) measurement of hernia sac; long vertical line denotes AP measurement of abdomen.